lnglat(): do not crash in OCTTransform() if the transformer is NULL (which can happen if called on non-georeferenced rasters)
lnglat(): do not crash in OCTTransform() if the transformer is NULL (which can happen if called on non-georeferenced rasters)

kapadia/rasterio,brendan-ward/rasterio,kapadia/rasterio,njwilson23/rasterio,njwilson23/rasterio,kapadia/rasterio,njwilson23/rasterio,brendan-ward/rasterio,brendan-ward/rasterio